针织物与机织物膜材的力学特性对比
作者:
作者单位:

同济大学 土木工程学院,上海 200092

作者简介:

杨 彬(1979—),男,山东济南人,同济大学副教授,博士生导师,博士. E-mail: yangbin@tongji.edu.cn

通讯作者:

罗晓群(1976—),男,江西临川人,同济大学副教授,硕士生导师,博士. E-mail: luoxiaoqun@tongji.edu.cn

中图分类号:

TU502+.6


Comparison on Mechanical Properties of Knitted Fabric and Woven Fabric Membrane
Author:
Affiliation:

College of Civil Engineering, Tongji University, Shanghai 200092, China

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    摘要:

    对比了Seaman PVDF8028双轴向经编织物膜材和Ferrari 1202T2膜材在0o、15o、30o、45o、60o、75o和90o下抗拉强度与断裂延伸率的变化规律以及断裂形式,研究了Tsai-Hill强度准则、Norris强度准则以及Hashin强度准则对2种膜材的适用性;对比了2种膜材在0o、15o、30o、45o、60o、75o和90o下的偏轴撕裂形式以及撕裂特性,研究了2种膜材的双轴力学特性,以及线性和非线性正交各向异性本构模型对2种膜材本构关系的适用性.研究结果可以为工程设计提供理论参考.

    Abstract:

    The variation rules of tensile strength and strain at break of the Seaman PVDF8028 biaxial warp knitted membrane and Ferrari 1202T2 membrane at seven biaxial angles of 0o, 15o, 30o, 45o, 60o, 75o and 90o were compared. The applicability of Tsai Hill strength criterion, Norris strength criterion and Hashin strength criterion to the two kinds of membranes was studied. The off-axis tear patterns and tear characteristics of the two kinds of membranes at 0o, 15o, 30o, 45o, 60o, 75o and 90o off-axis angles were compared. The biaxial mechanical properties of the two kinds of membranes were compared, and the applicability of linear and nonlinear orthotropic constitutive models to the constitutive relations of the two kinds of membranes was discussed, which can provide theoretical reference for engineering design.

    表 8 2种膜材在线性和非线性本构模型下的决定系数比较Table 8 R2 comparison of two membranes under linear and nonlinear constitutive models
    表 2 Seaman PVDF8028膜材各偏轴角度试件的性能Table 2 Properties of Seaman PVDF8028 membrane specimens with different off-axis angles
    表 4 Seaman PVDF8028膜材3种准则下预测值与试验值的比较Table 4 Comparison of predicted and experimental values of Seaman PVDF8028 membrane under three criteria
    表 5 Ferrari 1202T2膜材3种准则下预测值与试验值的比较Table 5 Comparison of predicted and experimental values of Ferrari 1202T2 membrane under three criteria
    表 6 2种膜材的偏轴撕裂强度Table 6 Off axis tear strength of two kinds of membrane
    表 1 Seaman PVDF8028膜材和Ferrari 1202T2膜材的物理参数Table 1 Physical parameters of Seaman PVDF8028 and Ferrari 1202T2 membranes
    表 7 2种膜材在线性和非线性本构模型下的RMS比较Table 7 RMS comparison of two membranes under linear and nonlinear constitutive models
    图1 偏轴拉伸试件示意图Fig.1 Shematic diagram of off axis tensile specimen(size:mm)
    图2 偏轴撕裂试件示意图Fig.2 Shematic diagram of off axis tear specimen(size:mm)
    图3 双轴拉伸试件图Fig.3 Drawing of biaxial tensile specimen(size:mm)
    图4 Seaman PVDF8028膜材的偏轴拉伸应力-应变曲线Fig.4 Off axis tensile stress-strain curves of Seaman PVDF8028 membranes
    图5 Ferrari 1202T2膜材的偏轴拉伸应力-应变曲线Fig.5 Off axis tensile stress-strain curves of Ferrari 1202T2 membranes
    图6 Seaman PVDF8028膜材的偏轴断裂形式Fig.6 Off axis break forms of Seaman PVDF8028 membranes
    图7 Ferrari 1202T2膜材的偏轴断裂形式Fig.7 Off axis break forms of Ferrari 1202T2 membranes
    图8 Seaman PVDF8028膜材的强度准则预测Fig.8 Strength criterion prediction of Seaman PVDF8028 membrane
    图9 Ferrari 1202T2膜材的强度准则预测Fig.9 Strength criterion prediction of Ferrari 1202T2 membrane
    图10 Seaman PVDF8028膜材的偏轴撕裂曲线Fig.10 Off axis tear curves of Seaman PVDF8028 membranes
    图11 Ferrari 1202T2膜材的偏轴撕裂曲线Fig.11 Off axis tear curves of Ferrari 1202T2 membranes
    图12 Seaman PVDF8028膜材的偏轴撕裂断口形式Fig.12 Fracture forms of off axis tear of Seaman PVDF8028 membranes
    图13 Ferrari 1202T2膜材的偏轴撕裂断口形式Fig.13 Fracture forms of off axis tear of Ferrari 1202T2 membranes
    图14 机织物膜材的内部结构Fig.14 Internal structure of woven fabric membrane[2]
    图15 针织物膜材的内部结构Fig.15 Internal structure of knitted fabric membrane[5]
    图16 Seaman PVDF8028膜材的双轴应力-应变曲线Fig.16 Biaxial stress-strain curves of Seaman PVDF8028 membranes
    图17 Ferrari 1202T2膜材的双轴应力-应变曲线Fig.17 Biaxial stress-strain curves of Ferrari 1202T2 membranes
    表 3 Ferrari 1202T2膜材各偏轴角度试件的性能Table 3 Properties of Ferrari 1202T2 membrane specimens with different off-axis angles
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杨彬,霍震霆,罗晓群,张其林,吴梦琳.针织物与机织物膜材的力学特性对比[J].建筑材料学报,2022,25(8):860-868

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  • 收稿日期:2021-06-18
  • 最后修改日期:2021-08-15
  • 在线发布日期: 2023-09-15
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